baber/WOPTO huggingface dataset:
Patent GB-1460996-A (GB)
Title: Selective signal receiver for use in telecommunication particu larly telephone systems
IPC: H04Q1/457
Filed: 1974-08-06
Abstract: 1460996 Tone receivers; frequency-to-digital conversion INTERNATIONAL STANDARD ELECTRIC CORP 6 Aug 1974 [16 Aug 1973] 34556/74 Headings H4K and H3H A receiver for detecting the presence of one out of a group of predetermined frequencies comprises a first counter which is fed by clock pulses for a predetermined number of cycles of a received signal as determined by a zero crossing counter, the count reached by the first counter identifying the frequency received. An incoming sinusoidal signal is converted to square waveform and is applied to a circuit ND which produces a spike for each zero crossing. The first spike sets a bi-stable NF to gate clock pulses to a counter TZ and a zero crossing counter NZ counts the spikes. Pairs of outputs Z1, Z2 &c. of the clock pulse counter are coupled to the set and reset inputs respectively of bistable circuits F 1 &c. so as to determine a range of counts applicable to a particular received frequency, the arrangement being such that when counter NZ has counted a predetermined number of zero crossings, e.g. corresponding to three cycles, it produces an output at R to cause the output of a set bi-stable circuit F1 &c. to be gated to a corresponding output 01 &c. thereby identifying the frequency. The band width and signal to noise ratio of the receiver are governed by the clock pulse rate, the count separation of the pairs of counter outputs Z1, Z2 &c. and the number of cycles over which the count is performed. Two such receivers may be used in a receiver for 2 (1 out of n) frequency tones in a telephone system. Reference has been directed by the Comptroller to Specification 1,221,890.
Patent GB-605483-A (GB)
Title: Improvements in or relating to range finders
IPC: G01C3/14
Filed: 1945-12-20
Abstract: 605,483. Range-finders. KODAK, Ltd. Dec. 20, 1945, No. 34562. Convention date, Jan. 19, 1943. [Class 97 (i)] In a stereoscopic range-finder in which left and right eye images are formed in image planes each containing a stereoscopic reticle mark, each plane also contains one of a pair of range indicating elements, e.g. index and scale and reflectors are placed before each entrance window so that light from one of the elements is reflected through its adjacent optical system into the other window to form an image adjacent the other indicating element. Alternatively light from both elements is projected respectively through half the optical system. The deviating means for producing stereoscopic coincidence of images and reticles also adjusts the projected element beam. As shown in Fig. 3 images are formed in the planes of reticles 13 by optical squares 31 and objectives 12 and are viewed in eyepieces 16, a deviator 33 effecting stereoscopic coincidence between the images of the object and of the reticle marks. A tilting plate 40 effects halving adjustment. An index mark 22 on one reticle 13 is illuminated by a lamp 20 light from which is projected by objective 12 and optical square 31 to a small prism 24 whence it is directed via a similar prism 26 to form an image adjacent a scale 39 on the other reticle thus indicating the range. The scale and image may be viewed by an eyepiece 46 or directly in one of the eyepieces 16. Alternatively the index image may be formed by prism 61, Fig. 7, on a rotatable disc 60 having a spiral ranging scale which is rotated manually to coincide with the index 22<1>, Fig. 7a, when the range may be read. The index 22 may have another index adjacent thereto also projected through both optical systems to form an image 71 indicating the accuracy of halving adjustment. In Fig. 6 both index 22 and scale 52 are projected through their respective optical systems and are imaged adjacent one another on a screen 55 by reflectors 53 and lens 54, range observation being effect at 56. Specifications 605,481, 605,482, 605,484, 605,485 and 605,486 are referred. to.
Patent GB-1064524-A (GB)
Title: Process for preparing new isophthalic acid derivatives
IPC: C07C69/90
Filed: 1964-08-24
Abstract: Novel compounds of formula I <FORM:1064524/C2/1> where R1 is alkoxy, R2 is alkoxy or a group of formula -NR5R6 which represents a heterocyclic ring, R3 is hydroxy, alkoxy, alkenyloxy or alkynyloxy, and R4 is alkenyloxy which may be substituted by at least one alkyl or phenyl group, are prepared by subjecting a compound of Formula I above in which R4 is hydrogen and R3 is an alkenyloxy radical which may be substituted by at least one alkyl or phenyl group, to a Claisen rearrangement, and, if desired, etherifying the product.
Patent GB-939309-A (GB)
Title: Improvements in or relating to machines for manufacturing wire netting or fabric
IPC: B21F27/04
Filed: 1962-09-11
Abstract: 939,309. Coiling. WAFIOS, WAGNER, FICKER & SCHMID G.m.b.H. Sept. 11, 1962 [Sept. 19, 1961], No. 34648/62. Class 83 (4). Bending tool for use in the production of flattened coils of wire, from which wire netting or fabric may be made, in which the tool is in the form of a flat, rotating bending former, around which is a giraffe or worming coil and also, if desired, a control spiral to prevent the coil from fluttering on the former, is characterized in that there is fitted into the central passage of the worming coil and/or the control spiral, an insertion piece, which rotates, but is held in position axially, and fills up the clearance space between the walls of the passage and the flattened sides of the coil of wire. Two wires 26a are wound around a flat rotating forming bar 18 as it extends through a member 20 having two internal helical slots 20a which serve to guide the wires 26a on the bar 18. The double coil 26b thus formed moves axially along the bar 18 and into a control member 21, through which the bar 18 extends, internal helical slots 21a in the member 21 serving to guide the coil 26b. The coil 26b passes from the bar 18, to a weaving-unit which interconnects wire coils to form netting. In case of a hold-up of the weaving- unit the coil billows out back to the control member 21 where the billowing out is stopped by an insertion piece 33 in the member 21. This comprises, Fig. 6, two plug-pieces 33a, 33b connected at one end by a radially slotted disc 33d which disc bears against the inlet end of the member 21 and the plugs 33a, 33b embrace the bar 18 within the member 21. In the absence of a control member 21 an insertion piece is put in the member 20. Specification 701,512 is referred to.
Patent GB-913038-A (GB)
Title: Improvements in and relating to telephone systems
IPC: H04K1/06
Filed: 1961-09-27
Abstract: 913,038. Secret transmissions. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. Sept. 27, 1961 [Oct. 10, 1960], No. 34649/61. Class 40 (4). In a system for time scrambling speech the signal is recorded on a magnetic drum 4, Fig. 1, by head E1 and consecutive samples of speech are read off simultaneously at heads L1 to L5 under the control of gates 7, these samples are fed via transposer devices 11 to 15 to recording- heads E2 to E6 where the samples are recorded simultaneously on to the drum in scrambled order to be read off consecutively at reproducing head L6. The transposer device, Fig. 2, comprises a number of relay coils 31, 32, 33, &c., which are energized by digital counters 21, 22, 23, &c. which are loop counters whose maximum counts are chosen to be prime numbers with respect to each other, counter 21 having a count of 2, counter 22 a count of 3, counter 23 a count of 5 &c., the counters being connected to the relays by plug-boards, e.g. 52, so that the relay may be operated on any desired count of the counters. The relays control contacts in the transposition unit, e.g. a, b, c, d, e, which connect the inputs to the unit to the outputs in either one, or a different, predetermined distribution, thus the connections of the read-out heads L1 to L5 to the record heads E2 to E6 are permuted after each group of five elements has been transmitted.
Patent GB-1431315-A (GB)
IPC: A45B17/00
Filed: 1973-07-20
Abstract: 1431315 Sunshades W T GLAESER 20 July 1973 [21 July 1972] 34721/73 Heading A4P A sunshade, which may be in the form of a parasol, awning or roof covering, comprises a cover supported by cover supporting means and having a plurality of apertures for continuously exposing the user therebeneath to a portion only of the sunlight incident on the top of the cover. A collapsible parasol has a generally conventional type of cover, of cloth, plastics, metal foil or rubber, with a plurality of irregularly or regularly spaced holes therein for passing air and 20 to 75 per cent of the sunlight incident on the cover top. An unapertured supplementary cover may be removably fitted over the apertured cover. An alternative parasol has a central pole 10 with a crown 24 and a slider pivoted to ribs 12 and struts 14, the ribs 12 supporting a  cover comprising a plurality of radially extending slats 22 pivotable about radial axes 28 extending between the hub and flexible peripheral frame elements 26, pivoting of the slats 22 varying the amount of sunlight passed through the openings between adjacent slats. The cover may be rotably mounted on the pole, being rotated by the wind acting on the slats 22, and also if desired on vanes 30, or by a battery powered motor.
Patent GB-755600-A (GB)
Title: Improvements in or relating to the preparation of unsaturated alcohols
Filed: 1954-12-02
Abstract: a -b -unsaturated alcohols, the molecular structure of which contains the <FORM:0755600/IV(a)/1> group, are prepared by a process comprising reacting the corresponding a -b -unsaturated aldehyde, the molecular structure of which contains the <FORM:0755600/IV(a)/2> group, with a secondary alcohol in the presence, as a catalyst, of between 0.02 and 0.14 mols. per mol. of said aldehyde, of an aluminium alcoholate derived from a secondary alcohol.  Preferably the aldehydes used as starting materials are those having the general formula <FORM:0755600/IV(a)/3> in which R is a hydrogen atom, a halogen atom or a saturated hydrocarbon radical, preferably an alkyl radical, such that the aldehyde contains not more than 10 carbon atoms in its molecule, e.g. acrolein, methacrolein, a -chloroacrolein and a -ethylacrolein.  Any secondary alcohol may be used but the preferred ones are the lower unsubstituted aliphatic alcohols such as isopropyl alcohol, secondary butyl alcohol, diethyl carbinol and methy-isobutyl carbinol.  The alcoholate may be used as a solution prepared by dissolving aluminium in a secondary alcohol.  Preferably the catalyst used is an aluminium alcoholate derived from the same secondary alcohol as is used for the reactant.  Preferably the temperature at which the reaction is carried out is between room temperature and the boiling point of the reaction mixture.  It is preferred to use substantially anhydrous starting materials.  In the examples (a) acrolein is reacted with secondary butyl alcohol in the presence of aluminium secondary butylate to give allyl alcohol and methyl ethyl ketone; (b) acrolein is reacted with isopropyl alcohol in the presence of aluminium isopropylate to give allyl alcohol; (c) acrolein is reacted with diethyl carbinol using the aluminate of diethyl carbinol as catalyst to give allyl alcohol; (d) acrolein is reacted with methyl isobutyl carbinol in the presence of aluminium dissolved in methyl isobutyl carbinol to give allyl alcohol; (e) methacrolein is reacted with secondary butyl alcohol in the presence of the aluminium alcoholate of the alcohol to give methallyl alcohol; (f) b  chlorallyl alcohol is obtained by a similarprocess to (e) using a -chloracrolein as starting material; (g) acrollin is reacted with di-isobutyl carbinol using the corresponding aluminium alcoholate (prepared by dissolving aluminium secondary butylate in di-isobutyl carbinol) as catalyst to give allyl alcohol; and (h) a -ethyl-acrolein is reacted with isopropyl alcohol in the presence of aluminium isopropylate to give b -ethyl allyl alcohol.
Patent GB-883001-A (GB)
Title: Transmission
Inventor: MCANINCH HERBERT A
IPC: A01C3/06
Filed: 1958-11-01
Abstract: 883,001. Variable-speed ratchet gear. BORGWARNER CORPORATION. Nov. 1, 1958, No. 35139/58. Class 80 (2). A transmission on a tractor-towed manurespreader comprises an input shaft 16 driven by the tractor power take-off, which drives the beater shaft directly through a manuallyreleasable coil-spring one-way clutch 31, bevel reduction gear 24, 35, and a sprocket 19; and also drives the apron shaft 23 through a steplessly-variable ratchet gear as follows. The outer race 53 of a one-way sprag clutch on the apron shaft 23 is oscillated against spring return 57 by an eccentric roller 62 on the end of the input shaft 16, the effective stroke and hence the speed of the driven shaft 23 being determined by adjustment of a stop-screw 68 bearing on an inclined lug 66 of the race 53. Reverse rotation of the apron shaft 23 is prevented by a one-way sprag detent 48.
Patent GB-1395174-A (GB)
Title: Fire protection system
IPC: A62C37/12
Filed: 1972-07-27
Abstract: 1395174 Sprinkler systems FACTORY MUTUAL RESEARCH CORP 27 July 1972 [8 Sept 1971] 35142/72 Heading ASA A fixed fire protection system has at least one extinguishant discharge head and means for connecting the head(s) to a source of extinguishant wherein the or each head comprises a body member 12 having an inlet for a source of extinguishant under pressure, an outlet 16 for discharging the extinguishant, a plug means 24 disposed in the body member for preventing the discharge of extinguishant from the outlet, and detent means for retaining the plug relative to the body member to close the outlet and constrained to release the plug from the body member to open the outlet in response to a pressure acting on the plug which is greater than a predetermined extinguishant pressure in the body member to permit the discharge of extinguishant from the outlet. The detent means comprises at least one spring-loaded element which may have means for adjusting the load on the element to change the value of the predetermined extinguishant pressure. The plug means may have a rod 22 and a head portion; the spring-loaded element may be a ball 60 having a portion extending into groove 69 formed in the rod 22; and the adjusting means may comprise sleeve 56 mounted in the body member in a concentric relationship with and adapted to receive an end portion of the rod, the sleeve having a bore 62 formed in the wall thereof for receiving ball 60 and spring 64 for the ball, the bore being aligned with the groove when the detent means retains the plug relative to the body member. A further ball 66 slidably supported in bore 62 and engaging spring 64, and a cup 70 concentrically disposed relative to sleeve 56 and in threaded engagement therewith, an inner wall of cup 70 having a tapered surface 74 which engages ball 66, whereby rotation of the cup changes the position of ball 66 in the bore and thus changes the resulting compression of the spring and the resulting load on ball 60. A plurality of the balls 60 and associated springs 64 and further balls 66 may be supported in respective bores in the sleeve, all the balls 60 engaging rod 22, whereby rotation of cup 70 effects a uniform change in the load on balls 60. As shown, latching means for retaining the plug in the body member comprises a rod 32 extending into tapered hole 36 in rod 22. A fusible member 44, responsive to a predetermined temperature in the vicinity of the discharge head activates spring 48 to retract rod 32 to release the plug. The plug is forced downwardly in proportion to the extinguishant pressure providing the pressure exceeds the predetermined locking force of balls 60, thus limiting the number of nozzles activated. The discharge is given a swirling motion by spiral vanes 18a, 18b.
Patent GB-1525491-A (GB)
Title: Laundry feeding apparatus
IPC: D06F67/04
Filed: 1975-08-26
Abstract: 1525491 Smoothing sheets J M JENSEN 26 Aug 1975 [4 Sept 1974] 35147/75 Heading B8R [Also in Division D1] Laundry sheets are spread out in front of an endless belt conveyer 1 by pairs of relatively separable clamps, e.g. 8, 9, and are then released and pushed on to the conveyer 1 by horizontally pivotable blades 33, 34. The two corners of one edge of a sheet are manually placed in the clamps which automatically close. Upon actuation of a switch, clamps 8, 9 move rightwards along track 6 to a centre position, and then in opposite directions to spread the sheet. A photocell senses completion of spread out, releases the clamps and actuates the blades. Other clamps for a second sheet are provided. Nip belts 35, 36 facilitate spreading.
Patent GB-750939-A (GB)
Title: Improvements in or relating to stabilised halogen-containing vinyl polymers or copolymers
IPC: C08K5/20
Filed: 1953-12-17
Abstract: Halogen-containing vinyl polymers or copolymers, particularly polyvinyl chloride, are stabilized by the addition of one or more neutral or basic polyvalent metal salts of aliphatic semiesters or semi-amides of a 1,2-ethylene dicarboxylic acid, whose alcoholic or amino components contain at least 10 carbon atoms. Salts specified are lead decyl maleate, mixed cadmium - lead - cetyl - decyl maleate, mixed calcium-zinc-cetyl maleate, lead cetyl maleate and lead heptadecylamide maleate.
Patent GB-638503-A (GB)
Title: Improvements in hydraulic pressure regulating valve devices
IPC: F15B1/027
Filed: 1946-11-27
Abstract: 638,503. Fluid-pressure servomotor-control systems; valves. BENDIX AVIATION CORPORATION. Nov. 27, 1946, No. 35181. Convention date, Jan. 11. [Class 135] A pressure-responsive device in a hydraulic power system arranged to effect the rapid opening and closing of a pump byepass valve between predetermined upper and lower pressure limits in the system, comprises a piston 25 having large and small diameter heads 25e, 25a respectively, slidable in a stepped bore 28, 24 in a casing 1 and urged by a spring 29 towards the small end of the bore, and a spring-urged selector valve 26. The valve 26 is formed with a head 26b controlling an axial bore 25c in the piston and a coned end 26a engageable with the lower end of a stationary but adjustable ported stem 30 on which the piston slides, and which communicates with a tank 11. The piston 25 is reduced in diameter to form a space open through ports 25h to the piston interior and through a duct 32 with the underside of a piston 34, the upper side of which is connected to the tank 11. The piston 34 is operatively connected to the spring-loaded byepass valve 20. In the position shown, the byepass valve 20 is closed and the pump P is delivering liquid past a non-return check-valve 22 to a supply line 17 which may be fitted with an accumulator 13. On the pressure in the line 17 reaching a value determined by the loading of the spring 29, the piston 25 and the selector valve 26 are both urged upwardly until the end 26a of the latter engages the stem to isolate the underside of the piston 34 from the tank 11. On a further increase in pressure in the line 17, the piston 25 moves away from the valve head 26b and the pressure liquid immediately acts on the underside of the piston head 25e to snap the piston 25 away from the valve head 26b and supply pressure liquid to the underside of the piston 34 to cause the rapid opening of the valve 20. On the pressure in the line 17 now decreasing, the piston 25 first moves downwardly until it contacts the valve head 26b whence further downward movement thereof breaks the end 26a away from the stem 30 and immediately opens the underside of the head 25e and the underside of the piston 34 to the tank 11, to permit the closure of the byepass valve 20.
Patent GB-1498994-A (GB)
Title: Conveyor system including article regrouping apparatus
IPC: B65G47/53
Filed: 1975-08-26
Abstract: 1498994 Transferring hollow articles between belt conveyers MIDLAND-ROSS CORP 26 Aug 1975 [27 Sept 1974] 35182/75 Heading B8A Hollow articles 5 in single file on a conveyer 7 (Fig. 5) are picked up by a vacuum head 23 and transferred to form successive rows on a wide band conveyer 10 (Fig. 1). Supply of vacuum to the head 23 is via a flexible pipe 14 leading from a valve 41 and blower 51. The valve 41 is controlled by a shaft 47 connected to linkage 31, 32, which determines the cyclic path of the head 23. The path followed by the head is napiform.
Patent GB-930433-A (GB)
Title: Preparation of olefins
IPC: C07C1/32
Filed: 1961-09-29
Abstract: Alpha-olefins are obtained from aluminium alkyl compounds, such as aluminium alkyl growth products, by atomizing and reacting in the absence of catalyst with a low molecular weight mono- 1- olefin at below 700 DEG F. and 200 p.s.i.a. for at least 30 seconds. Preferably the aluminium alkyl is preheated to below 650 DEG F., a solvent being present if desired, and atomized using the olefin, e.g. ethylene, as atomizing gas, the olefin being preheated to below reaction temperature, e.g. 230 DEG -550 DEG F., and reaction is effected in a heated zone at 100 DEG -700 DEG F., 1-200 p.s.i.a. for 30 seconds-15 minutes.  The olefin is used in molar excess, based on alkyl present in the aluminium alkyl, of 0-3,000%.
Patent GB-1201719-A (GB)
Title: Triazinylaminocoumarin compounds
IPC: D06L4/629
Filed: 1968-07-24
Abstract: 1,201,719. Optically brightened filaments. J. R. GEIGY A.G. 24 July, 1968 [25 July, 1967], No. 35221/68. Heading B5B. [Also in Divisions C2 and D1] Wet-spun threads of polymeric or copolymeric acrylonitrile in the swollen condition are optically brightened by treatment with a compound of the formula wherein A represents an unsubstituted phenyl radical or a phenyl radical substituted by a non- ionic group or by a group which does not impart colour to the compound, R 1  and R 2  represent hydrogen or C 1-6  alkyl groups, R 3  represents hydrogen or an optionally substituted C 1-6  alkyl or alkenyl group, R 4 , R 5  and R 6  represent optionally substituted C 1-6  alkyl or alkenyl groups, cycloalkyl or aralkyl groups or R 4  and R 5  together with the N atom and optionally with the inclusion of oxygen, form a non-aromatic heterocyclic ring, or R 4  and R 3  together represent an alkylene group, X represents a C 1-6  alkyl group, an optionally substituted C 1-6  alkoxy or alkylthio group or an amino group -NR 7 R 8  where R7 represents hydrogen or an optionally substituted C 1-6  alkyl or alkenyl group and R 8  may take the same values as R 7  or, additionally, represent a cycloalkyl group or an unsubstituted phenyl radical or a phenyl radical substituted by a non-ionic group or by a group which does not impart colour to the compound, or R 7  and R 8  together with the N atom, optionally with the inclusion of oxygen, form a non-aromatic heterocyclic ring, Z represents an alkylene or alkylene-oxa-alkylene radical and Y- is the anion of a strong, colourless acid. The brightening treatment is preferably effected by passing the filaments prepared in an aqueous precipitation bath through an aqueous solution containing 0À01-0À5% by wt. of brightener. Examples 34 and 35 describe the production of poly-acrylonitrile/methyl acrylate filaments by spinning in a water/dimethyl formamide bath, treatment with a solution of an optical brightener and subsequent drying and stabilization.